Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

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Subject: Re: [PolySix] Bad/ weird working keys

From: Oliver Fairhall <o.fairhall@iinet.net.au>
Date: 2009-09-29

Hi,

If you do find something, it would be really great if you could post
back with a result. I think it is a pretty common fault with this synth,
particularly in units which have seen some hard times.

Bas te Braak wrote:
> Thanks for the reply Oli! And yes it kinda does make me feel better to hear that i'm not the only one with this problem.
>
>
>
> I just sent an email to a dutch synth specialist. Hopefully he can shed some light on this. If I will find out more, I'll let you know!
>
>
>
> I'll also have a 2nd look and the mechanical part. Perhaps I can see something that is not correct.
>
>
>
> Greets,
>
>
>
> Bas.
>
>> To: PolySix@yahoogroups.com
>> From: o.fairhall@iinet.net.au
>> Date: Tue, 29 Sep 2009 17:20:12 +0800
>> Subject: Re: [PolySix] Bad/ weird working keys
>>
>> Hi,
>>
>> I have that problem, also. I don't think it is an electrical fault at
>> all. I think the issue is mechanical. For me, the pads/contacts work
>> fine. I believe the key mechanisms can not depress the pads sufficiently
>> well. For me to use the keys, I have to press very hard, at the rear end
>> of the keys, near the fulcrum. I haven't had time to investigate
>> further, though I assume there is a fault with the mechanism house, such
>> that the fulcrum is displaced in some way.
>>
>> That probably doesn't help very much, but some people may feel better
>> knowing that 'we are not alone'.
>>
>> Cheers,
>>
>> Oli
>>
>> Bas te Braak wrote:
>>> Hello everybody,
>>>
>>> I'm kinda new to the newsgroup, never knew that these groupemails are an option. Hopefully i'm doing this the right way...
>>>
>>> I purchased a neit looking Polysix. Everything works fine, except for 20-25 keys. Most keys do work, but have like a 2 to 4 seconds delay. While with other keys it's a case of adjusting the pressure on the note. The previous owner said they probably need cleaning (since this is a common Polysix thing). I tried cleaning with a pencil(rubber)eraser and alcohol, but no succes yet.
>>>
>>> And here is the thing that makes it weird for me. When I dismantle the long print-plate with the contactpoints and the rubberstrips from the keyboard and press notes on the rubberstrip with my finger, they all work perfect. All notes work perfect, even the really 'dead' ones.
>>>
>>> I tried switching the rubberpads of two keygroups (a good working one and a bad working one). But this didn't change anything. Wich gives me the idea that there is nothing wrong with the contactpoints, but with the way the keys hit the rubbers. (wich still does not explain the delay)
>>>
>>> A vintage synth collecting friend of mine said that it seems like the black things on the rubberstrip have difficulties passing on the electro impulse. And that during the delay it builds up the amount of electricity before it can be passed on to make the connection so you can hear the note. (sounds logical)
>>>
>>> Did anyone of you had this problem too? And if so can it be fixed by
>>> cleaning more intensive with a proper 'keyboard contact cleaning kit'? Or is
>>> there a problem with the keyboard itself? Thanks in advance for any solutions or directions!
>>>
>>> Cheers,
>>>
>>> Bas te Braak
>>> The Netherlands.
>>>
>>>
>>>
>>>
>>>
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>>> ------------------------------------
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>>> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>
>> ------------------------------------
>>
>> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6Yahoo! Groups Links
>>
>>
>>
>
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> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6Yahoo! Groups Links
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